Metal spacer for gin-saws.



H. W. LIGON.

METAL SPACER. FOR GIN SAWS.

APPLICATION FILED MAR. 27. 1912.

1338,91 1; Patented 17,1912.

2 S SEEET 1.

H. W. LIGON.

METAL SPACER FOR GIN SAWS.

APPLIOATION FILED mum. 1912.

1,038,91 1, Patented Sept. 17, 1912.

2 SHEETS-SHEET 2.

COLUMBIA PLANOORAPH C0.,W4\SHINGTON. 04 c.

tlNiTED STATES FATENT OFFTQE.

HARRY W. LIGON, 0F ATLANTA, GEORGIA, ASSIGNOR. T0 CONTINENTAL GIN COMPANY, OF BIRMINGHAM, ALABAMA, A CORPORATION OF DELAWARE.

METAL SPACER FOB, GIN-SAWS.

Application fi1ed March 27, 1912.

To all whom it may concern Be it known that I, HARRY W. LIGON, a citizen of the United States, and resident of Atlanta, in the county of Fulton and State of Georgia, have invented certain new and useful Improvements in Metal Spacers for Grin-Saws; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, and to the figures and letters of reference marked thereon.

This invention relates to improvements in spacers for cotton gin saws, cotton seed linters, etc., the object being to provide a spacer which shall be strong, light and easily manufactured, and one in which the clamping pressure for securing the saws together will be Well distributed over the saw surface.

To these ends the invention consists in certain novel details of construction and combinations and arrangement of parts, all as will be now described and the particular features of novelty pointed out in the appended claims.

In the accompanying drawings, wherein is illustrated several embodiments of the in vention,Figure 1 is a face view of a blank from which the preferred form of spacer is made, showing the different stages in its formation; Fig. 2 is a face view of a complete spacer; Fig. 3 is a sectional view; Figspe and 5 are fragmentary detail views of modified forms; and Fig. 6 is a view of amodified construction of spacer made up of sections.

Similar letters of reference in the several figures indicate the same parts.

As shown in Fig. 2, the spacer is formed from a sheet metal blank, there being a central disk or body portion A, usually of an nular form with a central, opening a for the passage of the saw shaft, and a peripheral rim B, the sides of which constitute the saw engaging faces. In the construction of the spacer a disk of metal of suitable Weight is stamped or punched to. form a blank having radial blades or fingers a each connected to the body portion A by narrow necks a. Each blade or finger a is then bent or twisted into a plane at substantially right angles to the body portion A, and curled or rolled upon itself preferably Specification of Letters Patent.

Patented Sept. 17,1912.

Serial No. 686,556.

from the outer end to the bases of an aXis parallel with the aXis of the spacer, all as shown in Fig. 1. In the complete spacerthe curled portions will lie close together to prevent the entrance of dirt between them, but to insure against this a peripheral inclosing band C of metal may be employed, as shown in Fig. 2.

Instead of rolling or curling the blades upon themselves they may be corrugated or fluted and bent as shown at D in Fig. 4, with the end of each section slightly overlapping t-he adjacent section, the axis of the corrugations being parallel with the axis of the spacer. So, too, the blades may be given a double curl from the base to the end of the blade, as shown at E, and then bent down, as shown in Fig. 5.

As thus far described, the spacer has been formed from a single integral blank, but it is entirely possible and within the scope of the present invention to form the same from separate sections. Such a construction is illustrated in Fig. 6, and referring to this figure it will be seen that each tongue F has a base portion G, the lower edge 9 of which is slightly curved, whereby, when the several sections are united a circular opening will be formed for the passage of the shaft. The several sections may be united in any suitable manner, but as shown, tongues are cut in one edge of the base portion G, between which the edge of the base portion of the adjacent section is slipped, the two being then spot welded. By this construction, it is possible to utilize scrap material having little commercial value.

The fingers forming the rim of the spacer may be bent in other ways than those illustrated to give the many-bend sinuous formation to strengthen the rim against col lapse by pressure applied to the opposite edges of the metal and therefore in the claims the terms sinuous and coil formations are used in a broad sense.

The spacer not only possesses great strength but is light and easily manufactured of cheap stock. It is positioned accurately by the central web and distributes the pressure uniformly over a large concentric area of the saws, whereby they may be clamped tightly without danger of distortion.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is:

1. A gin saw spacer formed up from sheet metal with a central web lying in a plane transverse to the axis of the spacer and a periphery formed by fingers integral with the web and extending parallel with the axis of the spacer on both sides of the plane of the web.

2. A gin saw spacer formed of sheet metal with a radial web lying in a plane trans verse to the axis of the spacer and a periphery formed by fingers integral with the web and twisted. to extend at right angles to the plane of the web parallel with the axis of the spacer.

8. A gin saw spacer formed of sheet metal with a radial web lying in a plane trans verse to the axis of the spacer and aperiphery formed by fingers integral with the web, twisted to extend on both sides of and at right angles to the plane of the web parallel with the axis of the spacer.

4. A gin saw spacer formed of sheet metal with a radial web lying in a plane transverse to the axis of the spacer and a periphery formed by fingers integral with the web,

twisted to extend at right angles to the plane of the web parallel with the axis of the spacer and each made sinuous in the plane of the web to increase its resistance to collapse by pressure applied to opposite edges.

5. A gin saw spacer formed of sheet metal with a central web and a rim formed of sections of sheet metal integral with the web each coiled with its axis parallel with the axis of the spacer.

6. A gin saw spacer having a central support and a periphery formed of sections of sheet metal integral with the central support each coiled with its axis parallel with the axis of the spacer.

7. A gin saw spacer formed of sheet metal with a central web and radial fingers integral therewith, each twisted and coiled with its axis parallel with the axis of the spacer.

8. A gin saw spacer formed of sheet metal with a central web and radial fingers each twisted and coiled with its axis parallel with the axis of the spacer and each extending on both sides of the plane of the web.

9. A gin saw spacer formed of sheet metal with a central web and sinuous peripheral rim formed of sheet metal sections integral with the central web and a peripheral band surrounding the rim.

HARRY W. LIGON.

Witnesses:

ANDREW Rem, THOS. J. WEsLEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

